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Comparing Coro/Coro/State.xs (file contents):
Revision 1.205 by root, Tue Oct 9 14:07:02 2007 UTC vs.
Revision 1.364 by root, Thu Jul 16 02:19:17 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
1281 */
1282
1283 /*
940 * If perl-run returns we assume exit() was being called or the coro 1284 * 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) 1285 * 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 1286 * 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" 1287 * bootstrap-time "top" top_env, as we cannot restore the "main"
944 * coroutine as Coro has no such concept 1288 * coroutine as Coro has no such concept.
1289 * This actually isn't valid with the pthread backend, but OSes requiring
1290 * that backend are too broken to do it in a standards-compliant way.
945 */ 1291 */
946 PL_top_env = main_top_env; 1292 PL_top_env = main_top_env;
947 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1293 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1294 }
948} 1295}
949 1296
950static coro_cctx * 1297static coro_cctx *
951cctx_new () 1298cctx_new ()
952{ 1299{
953 coro_cctx *cctx; 1300 coro_cctx *cctx;
1301
1302 ++cctx_count;
1303 New (0, cctx, 1, coro_cctx);
1304
1305 cctx->gen = cctx_gen;
1306 cctx->flags = 0;
1307 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1308
1309 return cctx;
1310}
1311
1312/* create a new cctx only suitable as source */
1313static coro_cctx *
1314cctx_new_empty ()
1315{
1316 coro_cctx *cctx = cctx_new ();
1317
1318 cctx->sptr = 0;
1319 coro_create (&cctx->cctx, 0, 0, 0, 0);
1320
1321 return cctx;
1322}
1323
1324/* create a new cctx suitable as destination/running a perl interpreter */
1325static coro_cctx *
1326cctx_new_run ()
1327{
1328 coro_cctx *cctx = cctx_new ();
954 void *stack_start; 1329 void *stack_start;
955 size_t stack_size; 1330 size_t stack_size;
956 1331
957 ++cctx_count;
958 fprintf (stderr, "bp1\n");//D
959
960 Newz (0, cctx, 1, coro_cctx);
961
962#if HAVE_MMAP 1332#if HAVE_MMAP
963 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1333 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
964 /* mmap supposedly does allocate-on-write for us */ 1334 /* mmap supposedly does allocate-on-write for us */
965 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1335 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
966 1336
967 if (cctx->sptr != (void *)-1) 1337 if (cctx->sptr != (void *)-1)
968 { 1338 {
969# if CORO_STACKGUARD 1339 #if CORO_STACKGUARD
970 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1340 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
971# endif 1341 #endif
972 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1342 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
973 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1343 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
974 cctx->flags |= CC_MAPPED; 1344 cctx->flags |= CC_MAPPED;
975 } 1345 }
976 else 1346 else
977#endif 1347#endif
978 { 1348 {
979 cctx->ssize = coro_stacksize * (long)sizeof (long); 1349 cctx->ssize = cctx_stacksize * (long)sizeof (long);
980 New (0, cctx->sptr, coro_stacksize, long); 1350 New (0, cctx->sptr, cctx_stacksize, long);
981 1351
982 if (!cctx->sptr) 1352 if (!cctx->sptr)
983 { 1353 {
984 perror ("FATAL: unable to allocate stack for coroutine"); 1354 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
985 _exit (EXIT_FAILURE); 1355 _exit (EXIT_FAILURE);
986 } 1356 }
987 1357
988 stack_start = cctx->sptr; 1358 stack_start = cctx->sptr;
989 stack_size = cctx->ssize; 1359 stack_size = cctx->ssize;
990 } 1360 }
991 1361
992 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1362 #if CORO_USE_VALGRIND
1363 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1364 #endif
1365
993 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1366 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
994 1367
995 return cctx; 1368 return cctx;
996} 1369}
997 1370
… …
999cctx_destroy (coro_cctx *cctx) 1372cctx_destroy (coro_cctx *cctx)
1000{ 1373{
1001 if (!cctx) 1374 if (!cctx)
1002 return; 1375 return;
1003 1376
1377 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1378
1004 --cctx_count; 1379 --cctx_count;
1380 coro_destroy (&cctx->cctx);
1005 1381
1382 /* coro_transfer creates new, empty cctx's */
1383 if (cctx->sptr)
1384 {
1006#if CORO_USE_VALGRIND 1385 #if CORO_USE_VALGRIND
1007 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1386 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1387 #endif
1388
1389#if HAVE_MMAP
1390 if (cctx->flags & CC_MAPPED)
1391 munmap (cctx->sptr, cctx->ssize);
1392 else
1008#endif 1393#endif
1009
1010#if HAVE_MMAP
1011 if (cctx->flags & CC_MAPPED)
1012 munmap (cctx->sptr, cctx->ssize);
1013 else
1014#endif
1015 Safefree (cctx->sptr); 1394 Safefree (cctx->sptr);
1395 }
1016 1396
1017 Safefree (cctx); 1397 Safefree (cctx);
1018} 1398}
1019 1399
1020/* wether this cctx should be destructed */ 1400/* wether this cctx should be destructed */
1021#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1401#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1022 1402
1023static coro_cctx * 1403static coro_cctx *
1024cctx_get (pTHX) 1404cctx_get (pTHX)
1025{ 1405{
1026 while (expect_true (cctx_first)) 1406 while (expect_true (cctx_first))
… …
1033 return cctx; 1413 return cctx;
1034 1414
1035 cctx_destroy (cctx); 1415 cctx_destroy (cctx);
1036 } 1416 }
1037 1417
1038 return cctx_new (); 1418 return cctx_new_run ();
1039} 1419}
1040 1420
1041static void 1421static void
1042cctx_put (coro_cctx *cctx) 1422cctx_put (coro_cctx *cctx)
1043{ 1423{
1424 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1425
1044 /* free another cctx if overlimit */ 1426 /* free another cctx if overlimit */
1045 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1427 if (expect_false (cctx_idle >= cctx_max_idle))
1046 { 1428 {
1047 coro_cctx *first = cctx_first; 1429 coro_cctx *first = cctx_first;
1048 cctx_first = first->next; 1430 cctx_first = first->next;
1049 --cctx_idle; 1431 --cctx_idle;
1050 1432
… …
1059/** coroutine switching *****************************************************/ 1441/** coroutine switching *****************************************************/
1060 1442
1061static void 1443static void
1062transfer_check (pTHX_ struct coro *prev, struct coro *next) 1444transfer_check (pTHX_ struct coro *prev, struct coro *next)
1063{ 1445{
1446 /* TODO: throwing up here is considered harmful */
1447
1064 if (expect_true (prev != next)) 1448 if (expect_true (prev != next))
1065 { 1449 {
1066 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1450 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1067 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1451 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1068 1452
1069 if (expect_false (next->flags & CF_RUNNING))
1070 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1071
1072 if (expect_false (next->flags & CF_DESTROYED)) 1453 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1073 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1454 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1074 1455
1075 if (
1076#if PERL_VERSION_ATLEAST (5,9,0) 1456#if !PERL_VERSION_ATLEAST (5,10,0)
1077 expect_false (PL_parser)
1078#else
1079 expect_false (PL_lex_state != LEX_NOTPARSING) 1457 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1458 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1080#endif 1459#endif
1081 )
1082 croak ("Coro::State::transfer called while parsing, but this is not supported");
1083 } 1460 }
1084} 1461}
1085 1462
1086/* always use the TRANSFER macro */ 1463/* always use the TRANSFER macro */
1087static void NOINLINE 1464static void NOINLINE /* noinline so we have a fixed stackframe */
1088transfer (pTHX_ struct coro *prev, struct coro *next) 1465transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1089{ 1466{
1090 dSTACKLEVEL; 1467 dSTACKLEVEL;
1091 1468
1092 /* sometimes transfer is only called to set idle_sp */ 1469 /* sometimes transfer is only called to set idle_sp */
1093 if (expect_false (!next)) 1470 if (expect_false (!prev))
1094 { 1471 {
1095 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1472 cctx_current->idle_sp = STACKLEVEL;
1096 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1473 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1097 } 1474 }
1098 else if (expect_true (prev != next)) 1475 else if (expect_true (prev != next))
1099 { 1476 {
1100 coro_cctx *prev__cctx; 1477 coro_cctx *cctx_prev;
1101 1478
1102 if (expect_false (prev->flags & CF_NEW)) 1479 if (expect_false (prev->flags & CF_NEW))
1103 { 1480 {
1104 /* create a new empty context */ 1481 /* create a new empty/source context */
1105 Newz (0, prev->cctx, 1, coro_cctx);
1106 prev->flags &= ~CF_NEW; 1482 prev->flags &= ~CF_NEW;
1107 prev->flags |= CF_RUNNING; 1483 prev->flags |= CF_RUNNING;
1108 } 1484 }
1109 1485
1110 prev->flags &= ~CF_RUNNING; 1486 prev->flags &= ~CF_RUNNING;
1111 next->flags |= CF_RUNNING; 1487 next->flags |= CF_RUNNING;
1112 1488
1113 LOCK; 1489 /* first get rid of the old state */
1490 save_perl (aTHX_ prev);
1114 1491
1115 if (expect_false (next->flags & CF_NEW)) 1492 if (expect_false (next->flags & CF_NEW))
1116 { 1493 {
1117 /* need to start coroutine */ 1494 /* need to start coroutine */
1118 next->flags &= ~CF_NEW; 1495 next->flags &= ~CF_NEW;
1119 /* first get rid of the old state */
1120 save_perl (aTHX_ prev);
1121 /* setup coroutine call */ 1496 /* setup coroutine call */
1122 coro_setup (aTHX_ next); 1497 coro_setup (aTHX_ next);
1123 } 1498 }
1124 else 1499 else
1500 load_perl (aTHX_ next);
1501
1502 /* possibly untie and reuse the cctx */
1503 if (expect_true (
1504 cctx_current->idle_sp == STACKLEVEL
1505 && !(cctx_current->flags & CC_TRACE)
1506 && !force_cctx
1507 ))
1125 { 1508 {
1126 /* coroutine already started */ 1509 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1127 save_perl (aTHX_ prev); 1510 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1128 load_perl (aTHX_ next); 1511
1512 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1513 /* without this the next cctx_get might destroy the running cctx while still in use */
1514 if (expect_false (CCTX_EXPIRED (cctx_current)))
1515 if (expect_true (!next->cctx))
1516 next->cctx = cctx_get (aTHX);
1517
1518 cctx_put (cctx_current);
1129 } 1519 }
1520 else
1521 prev->cctx = cctx_current;
1130 1522
1131 prev__cctx = prev->cctx; 1523 ++next->usecount;
1132 1524
1133 /* possibly "free" the cctx */ 1525 cctx_prev = cctx_current;
1134 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1526 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1527
1528 next->cctx = 0;
1529
1530 if (expect_false (cctx_prev != cctx_current))
1135 { 1531 {
1136 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1532 cctx_prev->top_env = PL_top_env;
1137 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1533 PL_top_env = cctx_current->top_env;
1138 1534 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1139 prev->cctx = 0;
1140
1141 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1142 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1143 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1144 if (!next->cctx)
1145 next->cctx = cctx_get (aTHX);
1146
1147 cctx_put (prev__cctx);
1148 } 1535 }
1149 1536
1150 ++next->usecount; 1537 transfer_tail (aTHX);
1151
1152 if (expect_true (!next->cctx))
1153 next->cctx = cctx_get (aTHX);
1154
1155 if (expect_false (prev__cctx != next->cctx))
1156 {
1157 prev__cctx->top_env = PL_top_env;
1158 PL_top_env = next->cctx->top_env;
1159 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1160 }
1161
1162 free_coro_mortal (aTHX);
1163 UNLOCK;
1164
1165 if (expect_false (prev->throw || next->throw))
1166 {
1167 struct coro *coro = SvSTATE (coro_current);
1168
1169 if (coro->throw)
1170 {
1171 SV *exception = coro->throw;
1172 coro->throw = 0;
1173 sv_setsv (ERRSV, exception);
1174 croak (0);
1175 }
1176 }
1177 } 1538 }
1178} 1539}
1179 1540
1180struct transfer_args
1181{
1182 struct coro *prev, *next;
1183};
1184
1185#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1541#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1186#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1542#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1187 1543
1188/** high level stuff ********************************************************/ 1544/** high level stuff ********************************************************/
1189 1545
1190static int 1546static int
1191coro_state_destroy (pTHX_ struct coro *coro) 1547coro_state_destroy (pTHX_ struct coro *coro)
1192{ 1548{
1193 if (coro->flags & CF_DESTROYED) 1549 if (coro->flags & CF_DESTROYED)
1194 return 0; 1550 return 0;
1551
1552 if (coro->on_destroy && !PL_dirty)
1553 coro->on_destroy (aTHX_ coro);
1195 1554
1196 coro->flags |= CF_DESTROYED; 1555 coro->flags |= CF_DESTROYED;
1197 1556
1198 if (coro->flags & CF_READY) 1557 if (coro->flags & CF_READY)
1199 { 1558 {
1200 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1559 /* reduce nready, as destroying a ready coro effectively unreadies it */
1201 /* alternative: look through all ready queues and remove the coro */ 1560 /* alternative: look through all ready queues and remove the coro */
1202 LOCK;
1203 --coro_nready; 1561 --coro_nready;
1204 UNLOCK;
1205 } 1562 }
1206 else 1563 else
1207 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1564 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1208 1565
1209 if (coro->mainstack && coro->mainstack != main_mainstack) 1566 if (coro->mainstack
1210 { 1567 && coro->mainstack != main_mainstack
1211 struct coro temp; 1568 && coro->slot
1212 1569 && !PL_dirty)
1213 if (coro->flags & CF_RUNNING)
1214 croak ("FATAL: tried to destroy currently running coroutine");
1215
1216 save_perl (aTHX_ &temp);
1217 load_perl (aTHX_ coro);
1218
1219 coro_destroy (aTHX_ coro); 1570 coro_destruct_perl (aTHX_ coro);
1220
1221 load_perl (aTHX_ &temp);
1222
1223 coro->slot = 0;
1224 }
1225 1571
1226 cctx_destroy (coro->cctx); 1572 cctx_destroy (coro->cctx);
1573 SvREFCNT_dec (coro->startcv);
1227 SvREFCNT_dec (coro->args); 1574 SvREFCNT_dec (coro->args);
1575 SvREFCNT_dec (CORO_THROW);
1228 1576
1229 if (coro->next) coro->next->prev = coro->prev; 1577 if (coro->next) coro->next->prev = coro->prev;
1230 if (coro->prev) coro->prev->next = coro->next; 1578 if (coro->prev) coro->prev->next = coro->next;
1231 if (coro == coro_first) coro_first = coro->next; 1579 if (coro == coro_first) coro_first = coro->next;
1232 1580
… …
1270# define MGf_DUP 0 1618# define MGf_DUP 0
1271#endif 1619#endif
1272}; 1620};
1273 1621
1274static void 1622static void
1275prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1623prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1276{ 1624{
1277 ta->prev = SvSTATE (prev_sv); 1625 ta->prev = SvSTATE (prev_sv);
1278 ta->next = SvSTATE (next_sv); 1626 ta->next = SvSTATE (next_sv);
1279 TRANSFER_CHECK (*ta); 1627 TRANSFER_CHECK (*ta);
1280} 1628}
1281 1629
1282static void 1630static void
1283api_transfer (SV *prev_sv, SV *next_sv) 1631api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1284{ 1632{
1285 dTHX;
1286 struct transfer_args ta; 1633 struct coro_transfer_args ta;
1287 1634
1288 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1635 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1289 TRANSFER (ta); 1636 TRANSFER (ta, 1);
1290} 1637}
1291 1638
1292/** Coro ********************************************************************/ 1639/** Coro ********************************************************************/
1293 1640
1294static void 1641INLINE void
1295coro_enq (pTHX_ SV *coro_sv) 1642coro_enq (pTHX_ struct coro *coro)
1296{ 1643{
1297 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1298}
1299 1645
1300static SV * 1646 SvREFCNT_inc_NN (coro->hv);
1301coro_deq (pTHX_ int min_prio)
1302{
1303 int prio = PRIO_MAX - PRIO_MIN;
1304 1647
1305 min_prio -= PRIO_MIN; 1648 coro->next_ready = 0;
1306 if (min_prio < 0) 1649 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1307 min_prio = 0; 1650 ready [1] = coro;
1651}
1308 1652
1653INLINE struct coro *
1654coro_deq (pTHX)
1655{
1656 int prio;
1657
1309 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1310 if (AvFILLp (coro_ready [prio]) >= 0) 1659 {
1311 return av_shift (coro_ready [prio]); 1660 struct coro **ready = coro_ready [prio];
1661
1662 if (ready [0])
1663 {
1664 struct coro *coro = ready [0];
1665 ready [0] = coro->next_ready;
1666 return coro;
1667 }
1668 }
1312 1669
1313 return 0; 1670 return 0;
1314} 1671}
1315 1672
1316static int 1673static int
1317api_ready (SV *coro_sv) 1674api_ready (pTHX_ SV *coro_sv)
1318{ 1675{
1319 dTHX;
1320 struct coro *coro; 1676 struct coro *coro;
1321 1677 SV *sv_hook;
1322 if (SvROK (coro_sv)) 1678 void (*xs_hook)(void);
1323 coro_sv = SvRV (coro_sv);
1324 1679
1325 coro = SvSTATE (coro_sv); 1680 coro = SvSTATE (coro_sv);
1326 1681
1327 if (coro->flags & CF_READY) 1682 if (coro->flags & CF_READY)
1328 return 0; 1683 return 0;
1329 1684
1330 coro->flags |= CF_READY; 1685 coro->flags |= CF_READY;
1331 1686
1332 LOCK; 1687 sv_hook = coro_nready ? 0 : coro_readyhook;
1333 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1688 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1689
1690 coro_enq (aTHX_ coro);
1334 ++coro_nready; 1691 ++coro_nready;
1335 UNLOCK; 1692
1693 if (sv_hook)
1694 {
1695 dSP;
1696
1697 ENTER;
1698 SAVETMPS;
1699
1700 PUSHMARK (SP);
1701 PUTBACK;
1702 call_sv (sv_hook, G_VOID | G_DISCARD);
1703
1704 FREETMPS;
1705 LEAVE;
1706 }
1707
1708 if (xs_hook)
1709 xs_hook ();
1336 1710
1337 return 1; 1711 return 1;
1338} 1712}
1339 1713
1340static int 1714static int
1341api_is_ready (SV *coro_sv) 1715api_is_ready (pTHX_ SV *coro_sv)
1342{ 1716{
1343 dTHX;
1344 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1717 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1345} 1718}
1346 1719
1347static void 1720/* expects to own a reference to next->hv */
1721INLINE void
1348prepare_schedule (pTHX_ struct transfer_args *ta) 1722prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1349{ 1723{
1350 SV *prev_sv, *next_sv;
1351
1352 for (;;)
1353 {
1354 LOCK;
1355 next_sv = coro_deq (aTHX_ PRIO_MIN);
1356
1357 /* nothing to schedule: call the idle handler */
1358 if (expect_false (!next_sv))
1359 {
1360 dSP;
1361 UNLOCK;
1362
1363 ENTER;
1364 SAVETMPS;
1365
1366 PUSHMARK (SP);
1367 PUTBACK;
1368 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1369
1370 FREETMPS;
1371 LEAVE;
1372 continue;
1373 }
1374
1375 ta->next = SvSTATE (next_sv);
1376
1377 /* cannot transfer to destroyed coros, skip and look for next */
1378 if (expect_false (ta->next->flags & CF_DESTROYED))
1379 {
1380 UNLOCK;
1381 SvREFCNT_dec (next_sv);
1382 /* coro_nready is already taken care of by destroy */
1383 continue;
1384 }
1385
1386 --coro_nready;
1387 UNLOCK;
1388 break;
1389 }
1390
1391 /* free this only after the transfer */
1392 prev_sv = SvRV (coro_current); 1724 SV *prev_sv = SvRV (coro_current);
1725
1393 ta->prev = SvSTATE (prev_sv); 1726 ta->prev = SvSTATE_hv (prev_sv);
1727 ta->next = next;
1728
1394 TRANSFER_CHECK (*ta); 1729 TRANSFER_CHECK (*ta);
1395 assert (ta->next->flags & CF_READY); 1730
1396 ta->next->flags &= ~CF_READY;
1397 SvRV_set (coro_current, next_sv); 1731 SvRV_set (coro_current, (SV *)next->hv);
1398 1732
1399 LOCK;
1400 free_coro_mortal (aTHX); 1733 free_coro_mortal (aTHX);
1401 coro_mortal = prev_sv; 1734 coro_mortal = prev_sv;
1402 UNLOCK;
1403} 1735}
1404 1736
1405static void 1737static void
1738prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1739{
1740 for (;;)
1741 {
1742 struct coro *next = coro_deq (aTHX);
1743
1744 if (expect_true (next))
1745 {
1746 /* cannot transfer to destroyed coros, skip and look for next */
1747 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1748 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1749 else
1750 {
1751 next->flags &= ~CF_READY;
1752 --coro_nready;
1753
1754 prepare_schedule_to (aTHX_ ta, next);
1755 break;
1756 }
1757 }
1758 else
1759 {
1760 /* nothing to schedule: call the idle handler */
1761 if (SvROK (sv_idle)
1762 && SvOBJECT (SvRV (sv_idle)))
1763 {
1764 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1765 api_ready (aTHX_ SvRV (sv_idle));
1766 --coro_nready;
1767 }
1768 else
1769 {
1770 dSP;
1771
1772 ENTER;
1773 SAVETMPS;
1774
1775 PUSHMARK (SP);
1776 PUTBACK;
1777 call_sv (sv_idle, G_VOID | G_DISCARD);
1778
1779 FREETMPS;
1780 LEAVE;
1781 }
1782 }
1783 }
1784}
1785
1786INLINE void
1406prepare_cede (pTHX_ struct transfer_args *ta) 1787prepare_cede (pTHX_ struct coro_transfer_args *ta)
1407{ 1788{
1408 api_ready (coro_current); 1789 api_ready (aTHX_ coro_current);
1409 prepare_schedule (aTHX_ ta); 1790 prepare_schedule (aTHX_ ta);
1410} 1791}
1411 1792
1793INLINE void
1794prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1795{
1796 SV *prev = SvRV (coro_current);
1797
1798 if (coro_nready)
1799 {
1800 prepare_schedule (aTHX_ ta);
1801 api_ready (aTHX_ prev);
1802 }
1803 else
1804 prepare_nop (aTHX_ ta);
1805}
1806
1807static void
1808api_schedule (pTHX)
1809{
1810 struct coro_transfer_args ta;
1811
1812 prepare_schedule (aTHX_ &ta);
1813 TRANSFER (ta, 1);
1814}
1815
1816static void
1817api_schedule_to (pTHX_ SV *coro_sv)
1818{
1819 struct coro_transfer_args ta;
1820 struct coro *next = SvSTATE (coro_sv);
1821
1822 SvREFCNT_inc_NN (coro_sv);
1823 prepare_schedule_to (aTHX_ &ta, next);
1824}
1825
1412static int 1826static int
1413prepare_cede_notself (pTHX_ struct transfer_args *ta) 1827api_cede (pTHX)
1414{ 1828{
1415 if (coro_nready) 1829 struct coro_transfer_args ta;
1416 { 1830
1417 SV *prev = SvRV (coro_current);
1418 prepare_schedule (aTHX_ ta); 1831 prepare_cede (aTHX_ &ta);
1419 api_ready (prev); 1832
1833 if (expect_true (ta.prev != ta.next))
1834 {
1835 TRANSFER (ta, 1);
1420 return 1; 1836 return 1;
1421 } 1837 }
1422 else 1838 else
1423 return 0; 1839 return 0;
1424} 1840}
1425 1841
1426static void
1427api_schedule (void)
1428{
1429 dTHX;
1430 struct transfer_args ta;
1431
1432 prepare_schedule (aTHX_ &ta);
1433 TRANSFER (ta);
1434}
1435
1436static int 1842static int
1437api_cede (void) 1843api_cede_notself (pTHX)
1438{ 1844{
1439 dTHX; 1845 if (coro_nready)
1846 {
1440 struct transfer_args ta; 1847 struct coro_transfer_args ta;
1441 1848
1442 prepare_cede (aTHX_ &ta); 1849 prepare_cede_notself (aTHX_ &ta);
1443
1444 if (expect_true (ta.prev != ta.next))
1445 {
1446 TRANSFER (ta); 1850 TRANSFER (ta, 1);
1447 return 1; 1851 return 1;
1448 } 1852 }
1449 else 1853 else
1450 return 0; 1854 return 0;
1451} 1855}
1452 1856
1453static int 1857static void
1454api_cede_notself (void)
1455{
1456 dTHX;
1457 struct transfer_args ta;
1458
1459 if (prepare_cede_notself (aTHX_ &ta))
1460 {
1461 TRANSFER (ta);
1462 return 1;
1463 }
1464 else
1465 return 0;
1466}
1467
1468static void
1469api_trace (SV *coro_sv, int flags) 1858api_trace (pTHX_ SV *coro_sv, int flags)
1470{ 1859{
1471 dTHX;
1472 struct coro *coro = SvSTATE (coro_sv); 1860 struct coro *coro = SvSTATE (coro_sv);
1473 1861
1862 if (coro->flags & CF_RUNNING)
1863 croak ("cannot enable tracing on a running coroutine, caught");
1864
1474 if (flags & CC_TRACE) 1865 if (flags & CC_TRACE)
1475 { 1866 {
1476 if (!coro->cctx) 1867 if (!coro->cctx)
1477 coro->cctx = cctx_new (); 1868 coro->cctx = cctx_new_run ();
1478 else if (!(coro->cctx->flags & CC_TRACE)) 1869 else if (!(coro->cctx->flags & CC_TRACE))
1479 croak ("cannot enable tracing on coroutine with custom stack"); 1870 croak ("cannot enable tracing on coroutine with custom stack, caught");
1480 1871
1481 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1872 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1482 } 1873 }
1483 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1874 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1484 { 1875 {
… …
1489 else 1880 else
1490 coro->slot->runops = RUNOPS_DEFAULT; 1881 coro->slot->runops = RUNOPS_DEFAULT;
1491 } 1882 }
1492} 1883}
1493 1884
1885static void
1886coro_call_on_destroy (pTHX_ struct coro *coro)
1887{
1888 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1889 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1890
1891 if (on_destroyp)
1892 {
1893 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1894
1895 while (AvFILLp (on_destroy) >= 0)
1896 {
1897 dSP; /* don't disturb outer sp */
1898 SV *cb = av_pop (on_destroy);
1899
1900 PUSHMARK (SP);
1901
1902 if (statusp)
1903 {
1904 int i;
1905 AV *status = (AV *)SvRV (*statusp);
1906 EXTEND (SP, AvFILLp (status) + 1);
1907
1908 for (i = 0; i <= AvFILLp (status); ++i)
1909 PUSHs (AvARRAY (status)[i]);
1910 }
1911
1912 PUTBACK;
1913 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1914 }
1915 }
1916}
1917
1918static void
1919slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{
1921 int i;
1922 HV *hv = (HV *)SvRV (coro_current);
1923 AV *av = newAV ();
1924
1925 av_extend (av, items - 1);
1926 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928
1929 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1930
1931 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1932 api_ready (aTHX_ sv_manager);
1933
1934 frame->prepare = prepare_schedule;
1935 frame->check = slf_check_repeat;
1936
1937 /* as a minor optimisation, we could unwind all stacks here */
1938 /* but that puts extra pressure on pp_slf, and is not worth much */
1939 /*coro_unwind_stacks (aTHX);*/
1940}
1941
1942/*****************************************************************************/
1943/* async pool handler */
1944
1945static int
1946slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1947{
1948 HV *hv = (HV *)SvRV (coro_current);
1949 struct coro *coro = (struct coro *)frame->data;
1950
1951 if (!coro->invoke_cb)
1952 return 1; /* loop till we have invoke */
1953 else
1954 {
1955 hv_store (hv, "desc", sizeof ("desc") - 1,
1956 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1957
1958 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1959
1960 {
1961 dSP;
1962 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1963 PUTBACK;
1964 }
1965
1966 SvREFCNT_dec (GvAV (PL_defgv));
1967 GvAV (PL_defgv) = coro->invoke_av;
1968 coro->invoke_av = 0;
1969
1970 return 0;
1971 }
1972}
1973
1974static void
1975slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1976{
1977 HV *hv = (HV *)SvRV (coro_current);
1978 struct coro *coro = SvSTATE_hv ((SV *)hv);
1979
1980 if (expect_true (coro->saved_deffh))
1981 {
1982 /* subsequent iteration */
1983 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1984 coro->saved_deffh = 0;
1985
1986 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1987 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1988 {
1989 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1990 coro->invoke_av = newAV ();
1991
1992 frame->prepare = prepare_nop;
1993 }
1994 else
1995 {
1996 av_clear (GvAV (PL_defgv));
1997 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1998
1999 coro->prio = 0;
2000
2001 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2002 api_trace (aTHX_ coro_current, 0);
2003
2004 frame->prepare = prepare_schedule;
2005 av_push (av_async_pool, SvREFCNT_inc (hv));
2006 }
2007 }
2008 else
2009 {
2010 /* first iteration, simply fall through */
2011 frame->prepare = prepare_nop;
2012 }
2013
2014 frame->check = slf_check_pool_handler;
2015 frame->data = (void *)coro;
2016}
2017
2018/*****************************************************************************/
2019/* rouse callback */
2020
2021#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2022
2023static void
2024coro_rouse_callback (pTHX_ CV *cv)
2025{
2026 dXSARGS;
2027 SV *data = (SV *)S_GENSUB_ARG;
2028
2029 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2030 {
2031 /* first call, set args */
2032 SV *coro = SvRV (data);
2033 AV *av = newAV ();
2034
2035 SvRV_set (data, (SV *)av);
2036
2037 /* better take a full copy of the arguments */
2038 while (items--)
2039 av_store (av, items, newSVsv (ST (items)));
2040
2041 api_ready (aTHX_ coro);
2042 SvREFCNT_dec (coro);
2043 }
2044
2045 XSRETURN_EMPTY;
2046}
2047
2048static int
2049slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2050{
2051 SV *data = (SV *)frame->data;
2052
2053 if (CORO_THROW)
2054 return 0;
2055
2056 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2057 return 1;
2058
2059 /* now push all results on the stack */
2060 {
2061 dSP;
2062 AV *av = (AV *)SvRV (data);
2063 int i;
2064
2065 EXTEND (SP, AvFILLp (av) + 1);
2066 for (i = 0; i <= AvFILLp (av); ++i)
2067 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2068
2069 /* we have stolen the elements, so set length to zero and free */
2070 AvFILLp (av) = -1;
2071 av_undef (av);
2072
2073 PUTBACK;
2074 }
2075
2076 return 0;
2077}
2078
2079static void
2080slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2081{
2082 SV *cb;
2083
2084 if (items)
2085 cb = arg [0];
2086 else
2087 {
2088 struct coro *coro = SvSTATE_current;
2089
2090 if (!coro->rouse_cb)
2091 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2092
2093 cb = sv_2mortal (coro->rouse_cb);
2094 coro->rouse_cb = 0;
2095 }
2096
2097 if (!SvROK (cb)
2098 || SvTYPE (SvRV (cb)) != SVt_PVCV
2099 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2100 croak ("Coro::rouse_wait called with illegal callback argument,");
2101
2102 {
2103 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2104 SV *data = (SV *)S_GENSUB_ARG;
2105
2106 frame->data = (void *)data;
2107 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2108 frame->check = slf_check_rouse_wait;
2109 }
2110}
2111
2112static SV *
2113coro_new_rouse_cb (pTHX)
2114{
2115 HV *hv = (HV *)SvRV (coro_current);
2116 struct coro *coro = SvSTATE_hv (hv);
2117 SV *data = newRV_inc ((SV *)hv);
2118 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2119
2120 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2121 SvREFCNT_dec (data); /* magicext increases the refcount */
2122
2123 SvREFCNT_dec (coro->rouse_cb);
2124 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2125
2126 return cb;
2127}
2128
2129/*****************************************************************************/
2130/* schedule-like-function opcode (SLF) */
2131
2132static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2133static const CV *slf_cv;
2134static SV **slf_argv;
2135static int slf_argc, slf_arga; /* count, allocated */
2136static I32 slf_ax; /* top of stack, for restore */
2137
2138/* this restores the stack in the case we patched the entersub, to */
2139/* recreate the stack frame as perl will on following calls */
2140/* since entersub cleared the stack */
2141static OP *
2142pp_restore (pTHX)
2143{
2144 int i;
2145 SV **SP = PL_stack_base + slf_ax;
2146
2147 PUSHMARK (SP);
2148
2149 EXTEND (SP, slf_argc + 1);
2150
2151 for (i = 0; i < slf_argc; ++i)
2152 PUSHs (sv_2mortal (slf_argv [i]));
2153
2154 PUSHs ((SV *)CvGV (slf_cv));
2155
2156 RETURNOP (slf_restore.op_first);
2157}
2158
2159static void
2160slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2161{
2162 SV **arg = (SV **)slf_frame.data;
2163
2164 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2165}
2166
2167static void
2168slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2169{
2170 if (items != 2)
2171 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2172
2173 frame->prepare = slf_prepare_transfer;
2174 frame->check = slf_check_nop;
2175 frame->data = (void *)arg; /* let's hope it will stay valid */
2176}
2177
2178static void
2179slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2180{
2181 frame->prepare = prepare_schedule;
2182 frame->check = slf_check_nop;
2183}
2184
2185static void
2186slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2187{
2188 struct coro *next = (struct coro *)slf_frame.data;
2189
2190 SvREFCNT_inc_NN (next->hv);
2191 prepare_schedule_to (aTHX_ ta, next);
2192}
2193
2194static void
2195slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2196{
2197 if (!items)
2198 croak ("Coro::schedule_to expects a coroutine argument, caught");
2199
2200 frame->data = (void *)SvSTATE (arg [0]);
2201 frame->prepare = slf_prepare_schedule_to;
2202 frame->check = slf_check_nop;
2203}
2204
2205static void
2206slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 api_ready (aTHX_ SvRV (coro_current));
2209
2210 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2211}
2212
2213static void
2214slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2215{
2216 frame->prepare = prepare_cede;
2217 frame->check = slf_check_nop;
2218}
2219
2220static void
2221slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2222{
2223 frame->prepare = prepare_cede_notself;
2224 frame->check = slf_check_nop;
2225}
2226
2227/*
2228 * these not obviously related functions are all rolled into one
2229 * function to increase chances that they all will call transfer with the same
2230 * stack offset
2231 * SLF stands for "schedule-like-function".
2232 */
2233static OP *
2234pp_slf (pTHX)
2235{
2236 I32 checkmark; /* mark SP to see how many elements check has pushed */
2237
2238 /* set up the slf frame, unless it has already been set-up */
2239 /* the latter happens when a new coro has been started */
2240 /* or when a new cctx was attached to an existing coroutine */
2241 if (expect_true (!slf_frame.prepare))
2242 {
2243 /* first iteration */
2244 dSP;
2245 SV **arg = PL_stack_base + TOPMARK + 1;
2246 int items = SP - arg; /* args without function object */
2247 SV *gv = *sp;
2248
2249 /* do a quick consistency check on the "function" object, and if it isn't */
2250 /* for us, divert to the real entersub */
2251 if (SvTYPE (gv) != SVt_PVGV
2252 || !GvCV (gv)
2253 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2254 return PL_ppaddr[OP_ENTERSUB](aTHX);
2255
2256 if (!(PL_op->op_flags & OPf_STACKED))
2257 {
2258 /* ampersand-form of call, use @_ instead of stack */
2259 AV *av = GvAV (PL_defgv);
2260 arg = AvARRAY (av);
2261 items = AvFILLp (av) + 1;
2262 }
2263
2264 /* now call the init function, which needs to set up slf_frame */
2265 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2266 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2267
2268 /* pop args */
2269 SP = PL_stack_base + POPMARK;
2270
2271 PUTBACK;
2272 }
2273
2274 /* now that we have a slf_frame, interpret it! */
2275 /* we use a callback system not to make the code needlessly */
2276 /* complicated, but so we can run multiple perl coros from one cctx */
2277
2278 do
2279 {
2280 struct coro_transfer_args ta;
2281
2282 slf_frame.prepare (aTHX_ &ta);
2283 TRANSFER (ta, 0);
2284
2285 checkmark = PL_stack_sp - PL_stack_base;
2286 }
2287 while (slf_frame.check (aTHX_ &slf_frame));
2288
2289 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2290
2291 /* exception handling */
2292 if (expect_false (CORO_THROW))
2293 {
2294 SV *exception = sv_2mortal (CORO_THROW);
2295
2296 CORO_THROW = 0;
2297 sv_setsv (ERRSV, exception);
2298 croak (0);
2299 }
2300
2301 /* return value handling - mostly like entersub */
2302 /* make sure we put something on the stack in scalar context */
2303 if (GIMME_V == G_SCALAR)
2304 {
2305 dSP;
2306 SV **bot = PL_stack_base + checkmark;
2307
2308 if (sp == bot) /* too few, push undef */
2309 bot [1] = &PL_sv_undef;
2310 else if (sp != bot + 1) /* too many, take last one */
2311 bot [1] = *sp;
2312
2313 SP = bot + 1;
2314
2315 PUTBACK;
2316 }
2317
2318 return NORMAL;
2319}
2320
2321static void
2322api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2323{
2324 int i;
2325 SV **arg = PL_stack_base + ax;
2326 int items = PL_stack_sp - arg + 1;
2327
2328 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2329
2330 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2331 && PL_op->op_ppaddr != pp_slf)
2332 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2333
2334 CvFLAGS (cv) |= CVf_SLF;
2335 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2336 slf_cv = cv;
2337
2338 /* we patch the op, and then re-run the whole call */
2339 /* we have to put the same argument on the stack for this to work */
2340 /* and this will be done by pp_restore */
2341 slf_restore.op_next = (OP *)&slf_restore;
2342 slf_restore.op_type = OP_CUSTOM;
2343 slf_restore.op_ppaddr = pp_restore;
2344 slf_restore.op_first = PL_op;
2345
2346 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2347
2348 if (PL_op->op_flags & OPf_STACKED)
2349 {
2350 if (items > slf_arga)
2351 {
2352 slf_arga = items;
2353 free (slf_argv);
2354 slf_argv = malloc (slf_arga * sizeof (SV *));
2355 }
2356
2357 slf_argc = items;
2358
2359 for (i = 0; i < items; ++i)
2360 slf_argv [i] = SvREFCNT_inc (arg [i]);
2361 }
2362 else
2363 slf_argc = 0;
2364
2365 PL_op->op_ppaddr = pp_slf;
2366 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2367
2368 PL_op = (OP *)&slf_restore;
2369}
2370
2371/*****************************************************************************/
2372/* dynamic wind */
2373
2374static void
2375on_enterleave_call (pTHX_ SV *cb)
2376{
2377 dSP;
2378
2379 PUSHSTACK;
2380
2381 PUSHMARK (SP);
2382 PUTBACK;
2383 call_sv (cb, G_VOID | G_DISCARD);
2384 SPAGAIN;
2385
2386 POPSTACK;
2387}
2388
2389static SV *
2390coro_avp_pop_and_free (pTHX_ AV **avp)
2391{
2392 AV *av = *avp;
2393 SV *res = av_pop (av);
2394
2395 if (AvFILLp (av) < 0)
2396 {
2397 *avp = 0;
2398 SvREFCNT_dec (av);
2399 }
2400
2401 return res;
2402}
2403
2404static void
2405coro_pop_on_enter (pTHX_ void *coro)
2406{
2407 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2408 SvREFCNT_dec (cb);
2409}
2410
2411static void
2412coro_pop_on_leave (pTHX_ void *coro)
2413{
2414 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2415 on_enterleave_call (aTHX_ sv_2mortal (cb));
2416}
2417
2418/*****************************************************************************/
2419/* PerlIO::cede */
2420
2421typedef struct
2422{
2423 PerlIOBuf base;
2424 NV next, every;
2425} PerlIOCede;
2426
2427static IV
2428PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2429{
2430 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2431
2432 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2433 self->next = nvtime () + self->every;
2434
2435 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2436}
2437
2438static SV *
2439PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2440{
2441 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2442
2443 return newSVnv (self->every);
2444}
2445
2446static IV
2447PerlIOCede_flush (pTHX_ PerlIO *f)
2448{
2449 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2450 double now = nvtime ();
2451
2452 if (now >= self->next)
2453 {
2454 api_cede (aTHX);
2455 self->next = now + self->every;
2456 }
2457
2458 return PerlIOBuf_flush (aTHX_ f);
2459}
2460
2461static PerlIO_funcs PerlIO_cede =
2462{
2463 sizeof(PerlIO_funcs),
2464 "cede",
2465 sizeof(PerlIOCede),
2466 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2467 PerlIOCede_pushed,
2468 PerlIOBuf_popped,
2469 PerlIOBuf_open,
2470 PerlIOBase_binmode,
2471 PerlIOCede_getarg,
2472 PerlIOBase_fileno,
2473 PerlIOBuf_dup,
2474 PerlIOBuf_read,
2475 PerlIOBuf_unread,
2476 PerlIOBuf_write,
2477 PerlIOBuf_seek,
2478 PerlIOBuf_tell,
2479 PerlIOBuf_close,
2480 PerlIOCede_flush,
2481 PerlIOBuf_fill,
2482 PerlIOBase_eof,
2483 PerlIOBase_error,
2484 PerlIOBase_clearerr,
2485 PerlIOBase_setlinebuf,
2486 PerlIOBuf_get_base,
2487 PerlIOBuf_bufsiz,
2488 PerlIOBuf_get_ptr,
2489 PerlIOBuf_get_cnt,
2490 PerlIOBuf_set_ptrcnt,
2491};
2492
2493/*****************************************************************************/
2494/* Coro::Semaphore & Coro::Signal */
2495
2496static SV *
2497coro_waitarray_new (pTHX_ int count)
2498{
2499 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2500 AV *av = newAV ();
2501 SV **ary;
2502
2503 /* unfortunately, building manually saves memory */
2504 Newx (ary, 2, SV *);
2505 AvALLOC (av) = ary;
2506#if PERL_VERSION_ATLEAST (5,10,0)
2507 AvARRAY (av) = ary;
2508#else
2509 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2510 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2511 SvPVX ((SV *)av) = (char *)ary;
2512#endif
2513 AvMAX (av) = 1;
2514 AvFILLp (av) = 0;
2515 ary [0] = newSViv (count);
2516
2517 return newRV_noinc ((SV *)av);
2518}
2519
2520/* semaphore */
2521
2522static void
2523coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2524{
2525 SV *count_sv = AvARRAY (av)[0];
2526 IV count = SvIVX (count_sv);
2527
2528 count += adjust;
2529 SvIVX (count_sv) = count;
2530
2531 /* now wake up as many waiters as are expected to lock */
2532 while (count > 0 && AvFILLp (av) > 0)
2533 {
2534 SV *cb;
2535
2536 /* swap first two elements so we can shift a waiter */
2537 AvARRAY (av)[0] = AvARRAY (av)[1];
2538 AvARRAY (av)[1] = count_sv;
2539 cb = av_shift (av);
2540
2541 if (SvOBJECT (cb))
2542 {
2543 api_ready (aTHX_ cb);
2544 --count;
2545 }
2546 else if (SvTYPE (cb) == SVt_PVCV)
2547 {
2548 dSP;
2549 PUSHMARK (SP);
2550 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2551 PUTBACK;
2552 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2553 }
2554
2555 SvREFCNT_dec (cb);
2556 }
2557}
2558
2559static void
2560coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2561{
2562 /* call $sem->adjust (0) to possibly wake up some other waiters */
2563 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2564}
2565
2566static int
2567slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2568{
2569 AV *av = (AV *)frame->data;
2570 SV *count_sv = AvARRAY (av)[0];
2571
2572 /* if we are about to throw, don't actually acquire the lock, just throw */
2573 if (CORO_THROW)
2574 return 0;
2575 else if (SvIVX (count_sv) > 0)
2576 {
2577 SvSTATE_current->on_destroy = 0;
2578
2579 if (acquire)
2580 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2581 else
2582 coro_semaphore_adjust (aTHX_ av, 0);
2583
2584 return 0;
2585 }
2586 else
2587 {
2588 int i;
2589 /* if we were woken up but can't down, we look through the whole */
2590 /* waiters list and only add us if we aren't in there already */
2591 /* this avoids some degenerate memory usage cases */
2592
2593 for (i = 1; i <= AvFILLp (av); ++i)
2594 if (AvARRAY (av)[i] == SvRV (coro_current))
2595 return 1;
2596
2597 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2598 return 1;
2599 }
2600}
2601
2602static int
2603slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2604{
2605 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2606}
2607
2608static int
2609slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2610{
2611 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2612}
2613
2614static void
2615slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2616{
2617 AV *av = (AV *)SvRV (arg [0]);
2618
2619 if (SvIVX (AvARRAY (av)[0]) > 0)
2620 {
2621 frame->data = (void *)av;
2622 frame->prepare = prepare_nop;
2623 }
2624 else
2625 {
2626 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2627
2628 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2629 frame->prepare = prepare_schedule;
2630
2631 /* to avoid race conditions when a woken-up coro gets terminated */
2632 /* we arrange for a temporary on_destroy that calls adjust (0) */
2633 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2634 }
2635}
2636
2637static void
2638slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2639{
2640 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2641 frame->check = slf_check_semaphore_down;
2642}
2643
2644static void
2645slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2646{
2647 if (items >= 2)
2648 {
2649 /* callback form */
2650 AV *av = (AV *)SvRV (arg [0]);
2651 SV *cb_cv = s_get_cv_croak (arg [1]);
2652
2653 av_push (av, SvREFCNT_inc_NN (cb_cv));
2654
2655 if (SvIVX (AvARRAY (av)[0]) > 0)
2656 coro_semaphore_adjust (aTHX_ av, 0);
2657
2658 frame->prepare = prepare_nop;
2659 frame->check = slf_check_nop;
2660 }
2661 else
2662 {
2663 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2664 frame->check = slf_check_semaphore_wait;
2665 }
2666}
2667
2668/* signal */
2669
2670static void
2671coro_signal_wake (pTHX_ AV *av, int count)
2672{
2673 SvIVX (AvARRAY (av)[0]) = 0;
2674
2675 /* now signal count waiters */
2676 while (count > 0 && AvFILLp (av) > 0)
2677 {
2678 SV *cb;
2679
2680 /* swap first two elements so we can shift a waiter */
2681 cb = AvARRAY (av)[0];
2682 AvARRAY (av)[0] = AvARRAY (av)[1];
2683 AvARRAY (av)[1] = cb;
2684
2685 cb = av_shift (av);
2686
2687 if (SvTYPE (cb) == SVt_PVCV)
2688 {
2689 dSP;
2690 PUSHMARK (SP);
2691 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2692 PUTBACK;
2693 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2694 }
2695 else
2696 {
2697 api_ready (aTHX_ cb);
2698 sv_setiv (cb, 0); /* signal waiter */
2699 }
2700
2701 SvREFCNT_dec (cb);
2702
2703 --count;
2704 }
2705}
2706
2707static int
2708slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2709{
2710 /* if we are about to throw, also stop waiting */
2711 return SvROK ((SV *)frame->data) && !CORO_THROW;
2712}
2713
2714static void
2715slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2716{
2717 AV *av = (AV *)SvRV (arg [0]);
2718
2719 if (items >= 2)
2720 {
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2722 av_push (av, SvREFCNT_inc_NN (cb_cv));
2723
2724 if (SvIVX (AvARRAY (av)[0]))
2725 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2726
2727 frame->prepare = prepare_nop;
2728 frame->check = slf_check_nop;
2729 }
2730 else if (SvIVX (AvARRAY (av)[0]))
2731 {
2732 SvIVX (AvARRAY (av)[0]) = 0;
2733 frame->prepare = prepare_nop;
2734 frame->check = slf_check_nop;
2735 }
2736 else
2737 {
2738 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2739
2740 av_push (av, waiter);
2741
2742 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2743 frame->prepare = prepare_schedule;
2744 frame->check = slf_check_signal_wait;
2745 }
2746}
2747
2748/*****************************************************************************/
2749/* Coro::AIO */
2750
2751#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2752
2753/* helper storage struct */
2754struct io_state
2755{
2756 int errorno;
2757 I32 laststype; /* U16 in 5.10.0 */
2758 int laststatval;
2759 Stat_t statcache;
2760};
2761
2762static void
2763coro_aio_callback (pTHX_ CV *cv)
2764{
2765 dXSARGS;
2766 AV *state = (AV *)S_GENSUB_ARG;
2767 SV *coro = av_pop (state);
2768 SV *data_sv = newSV (sizeof (struct io_state));
2769
2770 av_extend (state, items - 1);
2771
2772 sv_upgrade (data_sv, SVt_PV);
2773 SvCUR_set (data_sv, sizeof (struct io_state));
2774 SvPOK_only (data_sv);
2775
2776 {
2777 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2778
2779 data->errorno = errno;
2780 data->laststype = PL_laststype;
2781 data->laststatval = PL_laststatval;
2782 data->statcache = PL_statcache;
2783 }
2784
2785 /* now build the result vector out of all the parameters and the data_sv */
2786 {
2787 int i;
2788
2789 for (i = 0; i < items; ++i)
2790 av_push (state, SvREFCNT_inc_NN (ST (i)));
2791 }
2792
2793 av_push (state, data_sv);
2794
2795 api_ready (aTHX_ coro);
2796 SvREFCNT_dec (coro);
2797 SvREFCNT_dec ((AV *)state);
2798}
2799
2800static int
2801slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2802{
2803 AV *state = (AV *)frame->data;
2804
2805 /* if we are about to throw, return early */
2806 /* this does not cancel the aio request, but at least */
2807 /* it quickly returns */
2808 if (CORO_THROW)
2809 return 0;
2810
2811 /* one element that is an RV? repeat! */
2812 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2813 return 1;
2814
2815 /* restore status */
2816 {
2817 SV *data_sv = av_pop (state);
2818 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2819
2820 errno = data->errorno;
2821 PL_laststype = data->laststype;
2822 PL_laststatval = data->laststatval;
2823 PL_statcache = data->statcache;
2824
2825 SvREFCNT_dec (data_sv);
2826 }
2827
2828 /* push result values */
2829 {
2830 dSP;
2831 int i;
2832
2833 EXTEND (SP, AvFILLp (state) + 1);
2834 for (i = 0; i <= AvFILLp (state); ++i)
2835 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2836
2837 PUTBACK;
2838 }
2839
2840 return 0;
2841}
2842
2843static void
2844slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2845{
2846 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2847 SV *coro_hv = SvRV (coro_current);
2848 struct coro *coro = SvSTATE_hv (coro_hv);
2849
2850 /* put our coroutine id on the state arg */
2851 av_push (state, SvREFCNT_inc_NN (coro_hv));
2852
2853 /* first see whether we have a non-zero priority and set it as AIO prio */
2854 if (coro->prio)
2855 {
2856 dSP;
2857
2858 static SV *prio_cv;
2859 static SV *prio_sv;
2860
2861 if (expect_false (!prio_cv))
2862 {
2863 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2864 prio_sv = newSViv (0);
2865 }
2866
2867 PUSHMARK (SP);
2868 sv_setiv (prio_sv, coro->prio);
2869 XPUSHs (prio_sv);
2870
2871 PUTBACK;
2872 call_sv (prio_cv, G_VOID | G_DISCARD);
2873 }
2874
2875 /* now call the original request */
2876 {
2877 dSP;
2878 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2879 int i;
2880
2881 PUSHMARK (SP);
2882
2883 /* first push all args to the stack */
2884 EXTEND (SP, items + 1);
2885
2886 for (i = 0; i < items; ++i)
2887 PUSHs (arg [i]);
2888
2889 /* now push the callback closure */
2890 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2891
2892 /* now call the AIO function - we assume our request is uncancelable */
2893 PUTBACK;
2894 call_sv ((SV *)req, G_VOID | G_DISCARD);
2895 }
2896
2897 /* now that the requets is going, we loop toll we have a result */
2898 frame->data = (void *)state;
2899 frame->prepare = prepare_schedule;
2900 frame->check = slf_check_aio_req;
2901}
2902
2903static void
2904coro_aio_req_xs (pTHX_ CV *cv)
2905{
2906 dXSARGS;
2907
2908 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2909
2910 XSRETURN_EMPTY;
2911}
2912
2913/*****************************************************************************/
2914
2915#if CORO_CLONE
2916# include "clone.c"
2917#endif
2918
1494MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1495 2920
1496PROTOTYPES: DISABLE 2921PROTOTYPES: DISABLE
1497 2922
1498BOOT: 2923BOOT:
1499{ 2924{
1500#ifdef USE_ITHREADS 2925#ifdef USE_ITHREADS
1501 MUTEX_INIT (&coro_mutex); 2926# if CORO_PTHREAD
2927 coro_thx = PERL_GET_CONTEXT;
2928# endif
1502#endif 2929#endif
1503 BOOT_PAGESIZE; 2930 BOOT_PAGESIZE;
1504 2931
2932 cctx_current = cctx_new_empty ();
2933
1505 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2934 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1506 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2935 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1507 2936
2937 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2938 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2939 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2940
1508 hv_sig = coro_get_hv ("SIG", TRUE); 2941 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1509 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2942 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1510 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2943 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1511
1512 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1513 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1514 2944
1515 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2945 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1516 2946
1517 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2947 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1518 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2948 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1523 main_top_env = PL_top_env; 2953 main_top_env = PL_top_env;
1524 2954
1525 while (main_top_env->je_prev) 2955 while (main_top_env->je_prev)
1526 main_top_env = main_top_env->je_prev; 2956 main_top_env = main_top_env->je_prev;
1527 2957
2958 {
2959 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2960
2961 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2962 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2963
2964 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2965 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2966 }
2967
1528 coroapi.ver = CORO_API_VERSION; 2968 coroapi.ver = CORO_API_VERSION;
2969 coroapi.rev = CORO_API_REVISION;
2970
1529 coroapi.transfer = api_transfer; 2971 coroapi.transfer = api_transfer;
1530 2972
2973 coroapi.sv_state = SvSTATE_;
2974 coroapi.execute_slf = api_execute_slf;
2975 coroapi.prepare_nop = prepare_nop;
2976 coroapi.prepare_schedule = prepare_schedule;
2977 coroapi.prepare_cede = prepare_cede;
2978 coroapi.prepare_cede_notself = prepare_cede_notself;
2979
2980 {
2981 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2982
2983 if (!svp) croak ("Time::HiRes is required");
2984 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2985
2986 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2987
2988 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2989 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2990 }
2991
1531 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2992 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1532} 2993}
1533 2994
1534SV * 2995SV *
1535new (char *klass, ...) 2996new (char *klass, ...)
2997 ALIAS:
2998 Coro::new = 1
1536 CODE: 2999 CODE:
1537{ 3000{
1538 struct coro *coro; 3001 struct coro *coro;
3002 MAGIC *mg;
1539 HV *hv; 3003 HV *hv;
3004 SV *cb;
1540 int i; 3005 int i;
3006
3007 if (items > 1)
3008 {
3009 cb = s_get_cv_croak (ST (1));
3010
3011 if (!ix)
3012 {
3013 if (CvISXSUB (cb))
3014 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3015
3016 if (!CvROOT (cb))
3017 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3018 }
3019 }
1541 3020
1542 Newz (0, coro, 1, struct coro); 3021 Newz (0, coro, 1, struct coro);
1543 coro->args = newAV (); 3022 coro->args = newAV ();
1544 coro->flags = CF_NEW; 3023 coro->flags = CF_NEW;
1545 3024
1546 if (coro_first) coro_first->prev = coro; 3025 if (coro_first) coro_first->prev = coro;
1547 coro->next = coro_first; 3026 coro->next = coro_first;
1548 coro_first = coro; 3027 coro_first = coro;
1549 3028
1550 coro->hv = hv = newHV (); 3029 coro->hv = hv = newHV ();
1551 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 3030 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3031 mg->mg_flags |= MGf_DUP;
1552 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3032 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1553 3033
3034 if (items > 1)
3035 {
1554 av_extend (coro->args, items - 1); 3036 av_extend (coro->args, items - 1 + ix - 1);
3037
3038 if (ix)
3039 {
3040 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3041 cb = (SV *)cv_coro_run;
3042 }
3043
3044 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3045
1555 for (i = 1; i < items; i++) 3046 for (i = 2; i < items; i++)
1556 av_push (coro->args, newSVsv (ST (i))); 3047 av_push (coro->args, newSVsv (ST (i)));
3048 }
1557} 3049}
1558 OUTPUT: 3050 OUTPUT:
1559 RETVAL 3051 RETVAL
1560 3052
1561# these not obviously related functions are all rolled into the same xs
1562# function to increase chances that they all will call transfer with the same
1563# stack offset
1564void 3053void
1565_set_stacklevel (...) 3054transfer (...)
1566 ALIAS: 3055 PROTOTYPE: $$
1567 Coro::State::transfer = 1 3056 CODE:
1568 Coro::schedule = 2 3057 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1569 Coro::cede = 3
1570 Coro::cede_notself = 4
1571 CODE:
1572{
1573 struct transfer_args ta;
1574
1575 switch (ix)
1576 {
1577 case 0:
1578 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1579 ta.next = 0;
1580 break;
1581
1582 case 1:
1583 if (items != 2)
1584 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1585
1586 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1587 break;
1588
1589 case 2:
1590 prepare_schedule (aTHX_ &ta);
1591 break;
1592
1593 case 3:
1594 prepare_cede (aTHX_ &ta);
1595 break;
1596
1597 case 4:
1598 if (!prepare_cede_notself (aTHX_ &ta))
1599 XSRETURN_EMPTY;
1600
1601 break;
1602 }
1603
1604 BARRIER;
1605 TRANSFER (ta);
1606
1607 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1608 XSRETURN_YES;
1609}
1610 3058
1611bool 3059bool
1612_destroy (SV *coro_sv) 3060_destroy (SV *coro_sv)
1613 CODE: 3061 CODE:
1614 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3062 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1615 OUTPUT: 3063 OUTPUT:
1616 RETVAL 3064 RETVAL
1617 3065
1618void 3066void
1619_exit (code) 3067_exit (int code)
1620 int code
1621 PROTOTYPE: $ 3068 PROTOTYPE: $
1622 CODE: 3069 CODE:
1623 _exit (code); 3070 _exit (code);
1624 3071
3072SV *
3073clone (Coro::State coro)
3074 CODE:
3075{
3076#if CORO_CLONE
3077 struct coro *ncoro = coro_clone (aTHX_ coro);
3078 MAGIC *mg;
3079 /* TODO: too much duplication */
3080 ncoro->hv = newHV ();
3081 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3082 mg->mg_flags |= MGf_DUP;
3083 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3084#else
3085 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3086#endif
3087}
3088 OUTPUT:
3089 RETVAL
3090
1625int 3091int
1626cctx_stacksize (int new_stacksize = 0) 3092cctx_stacksize (int new_stacksize = 0)
3093 PROTOTYPE: ;$
1627 CODE: 3094 CODE:
1628 RETVAL = coro_stacksize; 3095 RETVAL = cctx_stacksize;
1629 if (new_stacksize) 3096 if (new_stacksize)
3097 {
1630 coro_stacksize = new_stacksize; 3098 cctx_stacksize = new_stacksize;
3099 ++cctx_gen;
3100 }
1631 OUTPUT: 3101 OUTPUT:
1632 RETVAL 3102 RETVAL
1633 3103
1634int 3104int
3105cctx_max_idle (int max_idle = 0)
3106 PROTOTYPE: ;$
3107 CODE:
3108 RETVAL = cctx_max_idle;
3109 if (max_idle > 1)
3110 cctx_max_idle = max_idle;
3111 OUTPUT:
3112 RETVAL
3113
3114int
1635cctx_count () 3115cctx_count ()
3116 PROTOTYPE:
1636 CODE: 3117 CODE:
1637 RETVAL = cctx_count; 3118 RETVAL = cctx_count;
1638 OUTPUT: 3119 OUTPUT:
1639 RETVAL 3120 RETVAL
1640 3121
1641int 3122int
1642cctx_idle () 3123cctx_idle ()
3124 PROTOTYPE:
1643 CODE: 3125 CODE:
1644 RETVAL = cctx_idle; 3126 RETVAL = cctx_idle;
1645 OUTPUT: 3127 OUTPUT:
1646 RETVAL 3128 RETVAL
1647 3129
1648void 3130void
1649list () 3131list ()
3132 PROTOTYPE:
1650 PPCODE: 3133 PPCODE:
1651{ 3134{
1652 struct coro *coro; 3135 struct coro *coro;
1653 for (coro = coro_first; coro; coro = coro->next) 3136 for (coro = coro_first; coro; coro = coro->next)
1654 if (coro->hv) 3137 if (coro->hv)
… …
1659call (Coro::State coro, SV *coderef) 3142call (Coro::State coro, SV *coderef)
1660 ALIAS: 3143 ALIAS:
1661 eval = 1 3144 eval = 1
1662 CODE: 3145 CODE:
1663{ 3146{
1664 if (coro->mainstack) 3147 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1665 { 3148 {
1666 struct coro temp; 3149 struct coro *current = SvSTATE_current;
1667 3150
1668 if (!(coro->flags & CF_RUNNING)) 3151 if (current != coro)
1669 { 3152 {
3153 PUTBACK;
1670 save_perl (aTHX_ &temp); 3154 save_perl (aTHX_ current);
1671 load_perl (aTHX_ coro); 3155 load_perl (aTHX_ coro);
3156 SPAGAIN;
1672 } 3157 }
1673 3158
1674 { 3159 PUSHSTACK;
1675 dSP; 3160
1676 ENTER;
1677 SAVETMPS;
1678 PUSHMARK (SP); 3161 PUSHMARK (SP);
1679 PUTBACK; 3162 PUTBACK;
1680 3163
1681 if (ix) 3164 if (ix)
1682 eval_sv (coderef, 0); 3165 eval_sv (coderef, 0);
1683 else 3166 else
1684 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3167 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1685 3168
3169 POPSTACK;
1686 SPAGAIN; 3170 SPAGAIN;
1687 FREETMPS;
1688 LEAVE;
1689 PUTBACK;
1690 }
1691 3171
1692 if (!(coro->flags & CF_RUNNING)) 3172 if (current != coro)
1693 { 3173 {
3174 PUTBACK;
1694 save_perl (aTHX_ coro); 3175 save_perl (aTHX_ coro);
1695 load_perl (aTHX_ &temp); 3176 load_perl (aTHX_ current);
3177 SPAGAIN;
1696 } 3178 }
1697 } 3179 }
1698} 3180}
1699 3181
1700SV * 3182SV *
… …
1703 ALIAS: 3185 ALIAS:
1704 is_ready = CF_READY 3186 is_ready = CF_READY
1705 is_running = CF_RUNNING 3187 is_running = CF_RUNNING
1706 is_new = CF_NEW 3188 is_new = CF_NEW
1707 is_destroyed = CF_DESTROYED 3189 is_destroyed = CF_DESTROYED
3190 is_suspended = CF_SUSPENDED
1708 CODE: 3191 CODE:
1709 RETVAL = boolSV (coro->flags & ix); 3192 RETVAL = boolSV (coro->flags & ix);
1710 OUTPUT: 3193 OUTPUT:
1711 RETVAL 3194 RETVAL
1712 3195
1713void 3196void
3197throw (Coro::State self, SV *throw = &PL_sv_undef)
3198 PROTOTYPE: $;$
3199 CODE:
3200{
3201 struct coro *current = SvSTATE_current;
3202 SV **throwp = self == current ? &CORO_THROW : &self->except;
3203 SvREFCNT_dec (*throwp);
3204 SvGETMAGIC (throw);
3205 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3206}
3207
3208void
1714api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3209api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3210 PROTOTYPE: $;$
3211 C_ARGS: aTHX_ coro, flags
1715 3212
1716SV * 3213SV *
1717has_stack (Coro::State coro) 3214has_cctx (Coro::State coro)
1718 PROTOTYPE: $ 3215 PROTOTYPE: $
1719 CODE: 3216 CODE:
1720 RETVAL = boolSV (!!coro->cctx); 3217 /* maybe manage the running flag differently */
3218 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1721 OUTPUT: 3219 OUTPUT:
1722 RETVAL 3220 RETVAL
1723 3221
1724int 3222int
1725is_traced (Coro::State coro) 3223is_traced (Coro::State coro)
… …
1727 CODE: 3225 CODE:
1728 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3226 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1729 OUTPUT: 3227 OUTPUT:
1730 RETVAL 3228 RETVAL
1731 3229
1732IV 3230UV
1733rss (Coro::State coro) 3231rss (Coro::State coro)
1734 PROTOTYPE: $ 3232 PROTOTYPE: $
1735 ALIAS: 3233 ALIAS:
1736 usecount = 1 3234 usecount = 1
1737 CODE: 3235 CODE:
… …
1741 case 1: RETVAL = coro->usecount; break; 3239 case 1: RETVAL = coro->usecount; break;
1742 } 3240 }
1743 OUTPUT: 3241 OUTPUT:
1744 RETVAL 3242 RETVAL
1745 3243
3244void
3245force_cctx ()
3246 PROTOTYPE:
3247 CODE:
3248 cctx_current->idle_sp = 0;
3249
3250void
3251swap_defsv (Coro::State self)
3252 PROTOTYPE: $
3253 ALIAS:
3254 swap_defav = 1
3255 CODE:
3256 if (!self->slot)
3257 croak ("cannot swap state with coroutine that has no saved state,");
3258 else
3259 {
3260 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3261 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3262
3263 SV *tmp = *src; *src = *dst; *dst = tmp;
3264 }
3265
3266void
3267cancel (Coro::State self)
3268 CODE:
3269 coro_state_destroy (aTHX_ self);
3270 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3271
3272
3273SV *
3274enable_times (int enabled = enable_times)
3275 CODE:
3276{
3277 RETVAL = boolSV (enable_times);
3278
3279 if (enabled != enable_times)
3280 {
3281 enable_times = enabled;
3282
3283 coro_times_update ();
3284 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3285 }
3286}
3287 OUTPUT:
3288 RETVAL
3289
3290void
3291times (Coro::State self)
3292 PPCODE:
3293{
3294 struct coro *current = SvSTATE (coro_current);
3295
3296 if (expect_false (current == self))
3297 {
3298 coro_times_update ();
3299 coro_times_add (SvSTATE (coro_current));
3300 }
3301
3302 EXTEND (SP, 2);
3303 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3304 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3305
3306 if (expect_false (current == self))
3307 coro_times_sub (SvSTATE (coro_current));
3308}
1746 3309
1747MODULE = Coro::State PACKAGE = Coro 3310MODULE = Coro::State PACKAGE = Coro
1748 3311
1749BOOT: 3312BOOT:
1750{ 3313{
1751 int i;
1752
1753 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE); 3314 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1754 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE); 3315 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3316 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3317 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3318 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1755 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 3319 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3320 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3321 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3322 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1756 3323
1757 coro_current = coro_get_sv ("Coro::current", FALSE); 3324 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1758 SvREADONLY_on (coro_current); 3325 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3326 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3327 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1759 3328
1760 coro_stash = gv_stashpv ("Coro", TRUE); 3329 coro_stash = gv_stashpv ("Coro", TRUE);
1761 3330
1762 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3331 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1763 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3332 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1764 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3333 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1765 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3334 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1766 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3335 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1767 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3336 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1768
1769 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1770 coro_ready[i] = newAV ();
1771 3337
1772 { 3338 {
1773 SV *sv = perl_get_sv ("Coro::API", TRUE); 3339 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1774 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1775 3340
1776 coroapi.schedule = api_schedule; 3341 coroapi.schedule = api_schedule;
3342 coroapi.schedule_to = api_schedule_to;
1777 coroapi.cede = api_cede; 3343 coroapi.cede = api_cede;
1778 coroapi.cede_notself = api_cede_notself; 3344 coroapi.cede_notself = api_cede_notself;
1779 coroapi.ready = api_ready; 3345 coroapi.ready = api_ready;
1780 coroapi.is_ready = api_is_ready; 3346 coroapi.is_ready = api_is_ready;
1781 coroapi.nready = &coro_nready; 3347 coroapi.nready = coro_nready;
1782 coroapi.current = coro_current; 3348 coroapi.current = coro_current;
1783 3349
1784 GCoroAPI = &coroapi; 3350 /*GCoroAPI = &coroapi;*/
1785 sv_setiv (sv, (IV)&coroapi); 3351 sv_setiv (sv, (IV)&coroapi);
1786 SvREADONLY_on (sv); 3352 SvREADONLY_on (sv);
1787 } 3353 }
1788} 3354}
3355
3356void
3357terminate (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3360
3361void
3362schedule (...)
3363 CODE:
3364 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3365
3366void
3367schedule_to (...)
3368 CODE:
3369 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3370
3371void
3372cede_to (...)
3373 CODE:
3374 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3375
3376void
3377cede (...)
3378 CODE:
3379 CORO_EXECUTE_SLF_XS (slf_init_cede);
3380
3381void
3382cede_notself (...)
3383 CODE:
3384 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1789 3385
1790void 3386void
1791_set_current (SV *current) 3387_set_current (SV *current)
1792 PROTOTYPE: $ 3388 PROTOTYPE: $
1793 CODE: 3389 CODE:
1794 SvREFCNT_dec (SvRV (coro_current)); 3390 SvREFCNT_dec (SvRV (coro_current));
1795 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3391 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3392
3393void
3394_set_readyhook (SV *hook)
3395 PROTOTYPE: $
3396 CODE:
3397 SvREFCNT_dec (coro_readyhook);
3398 SvGETMAGIC (hook);
3399 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1796 3400
1797int 3401int
1798prio (Coro::State coro, int newprio = 0) 3402prio (Coro::State coro, int newprio = 0)
3403 PROTOTYPE: $;$
1799 ALIAS: 3404 ALIAS:
1800 nice = 1 3405 nice = 1
1801 CODE: 3406 CODE:
1802{ 3407{
1803 RETVAL = coro->prio; 3408 RETVAL = coro->prio;
… …
1805 if (items > 1) 3410 if (items > 1)
1806 { 3411 {
1807 if (ix) 3412 if (ix)
1808 newprio = coro->prio - newprio; 3413 newprio = coro->prio - newprio;
1809 3414
1810 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3415 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1811 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3416 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1812 3417
1813 coro->prio = newprio; 3418 coro->prio = newprio;
1814 } 3419 }
1815} 3420}
1816 OUTPUT: 3421 OUTPUT:
… …
1818 3423
1819SV * 3424SV *
1820ready (SV *self) 3425ready (SV *self)
1821 PROTOTYPE: $ 3426 PROTOTYPE: $
1822 CODE: 3427 CODE:
1823 RETVAL = boolSV (api_ready (self)); 3428 RETVAL = boolSV (api_ready (aTHX_ self));
1824 OUTPUT: 3429 OUTPUT:
1825 RETVAL 3430 RETVAL
1826 3431
1827int 3432int
1828nready (...) 3433nready (...)
… …
1831 RETVAL = coro_nready; 3436 RETVAL = coro_nready;
1832 OUTPUT: 3437 OUTPUT:
1833 RETVAL 3438 RETVAL
1834 3439
1835void 3440void
1836throw (Coro::State self, SV *throw = &PL_sv_undef) 3441suspend (Coro::State self)
1837 PROTOTYPE: $;$ 3442 PROTOTYPE: $
1838 CODE: 3443 CODE:
1839 SvREFCNT_dec (self->throw); 3444 self->flags |= CF_SUSPENDED;
1840 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1841 3445
1842# for async_pool speedup
1843void 3446void
1844_pool_1 (SV *cb) 3447resume (Coro::State self)
3448 PROTOTYPE: $
1845 CODE: 3449 CODE:
1846{ 3450 self->flags &= ~CF_SUSPENDED;
1847 struct coro *coro = SvSTATE (coro_current);
1848 HV *hv = (HV *)SvRV (coro_current);
1849 AV *defav = GvAV (PL_defgv);
1850 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1851 AV *invoke_av;
1852 int i, len;
1853 3451
1854 if (!invoke) 3452void
1855 croak ("\3async_pool terminate\2\n"); 3453_pool_handler (...)
3454 CODE:
3455 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1856 3456
1857 SvREFCNT_dec (coro->saved_deffh); 3457void
1858 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3458async_pool (SV *cv, ...)
3459 PROTOTYPE: &@
3460 PPCODE:
3461{
3462 HV *hv = (HV *)av_pop (av_async_pool);
3463 AV *av = newAV ();
3464 SV *cb = ST (0);
3465 int i;
1859 3466
1860 hv_store (hv, "desc", sizeof ("desc") - 1, 3467 av_extend (av, items - 2);
1861 newSVpvn (strpair ("[async_pool]")), 0); 3468 for (i = 1; i < items; ++i)
3469 av_push (av, SvREFCNT_inc_NN (ST (i)));
1862 3470
1863 invoke_av = (AV *)SvRV (invoke); 3471 if ((SV *)hv == &PL_sv_undef)
1864 len = av_len (invoke_av);
1865
1866 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1867
1868 if (len > 0)
1869 { 3472 {
1870 av_fill (defav, len - 1); 3473 PUSHMARK (SP);
1871 for (i = 0; i < len; ++i) 3474 EXTEND (SP, 2);
1872 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3475 PUSHs (sv_Coro);
3476 PUSHs ((SV *)cv_pool_handler);
3477 PUTBACK;
3478 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3479 SPAGAIN;
3480
3481 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1873 } 3482 }
1874 3483
3484 {
3485 struct coro *coro = SvSTATE_hv (hv);
3486
3487 assert (!coro->invoke_cb);
3488 assert (!coro->invoke_av);
3489 coro->invoke_cb = SvREFCNT_inc (cb);
3490 coro->invoke_av = av;
3491 }
3492
3493 api_ready (aTHX_ (SV *)hv);
3494
3495 if (GIMME_V != G_VOID)
3496 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3497 else
1875 SvREFCNT_dec (invoke); 3498 SvREFCNT_dec (hv);
1876} 3499}
1877 3500
1878void 3501SV *
1879_pool_2 (SV *cb) 3502rouse_cb ()
3503 PROTOTYPE:
1880 CODE: 3504 CODE:
1881{ 3505 RETVAL = coro_new_rouse_cb (aTHX);
1882 struct coro *coro = SvSTATE (coro_current);
1883
1884 sv_setsv (cb, &PL_sv_undef);
1885
1886 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1887 coro->saved_deffh = 0;
1888
1889 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1890 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1891 croak ("\3async_pool terminate\2\n");
1892
1893 av_clear (GvAV (PL_defgv));
1894 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1895 newSVpvn (strpair ("[async_pool idle]")), 0);
1896
1897 coro->prio = 0;
1898
1899 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1900 api_trace (coro_current, 0);
1901
1902 av_push (av_async_pool, newSVsv (coro_current));
1903}
1904
1905
1906MODULE = Coro::State PACKAGE = Coro::AIO
1907
1908SV *
1909_get_state ()
1910 CODE:
1911{
1912 struct io_state *data;
1913
1914 RETVAL = newSV (sizeof (struct io_state));
1915 data = (struct io_state *)SvPVX (RETVAL);
1916 SvCUR_set (RETVAL, sizeof (struct io_state));
1917 SvPOK_only (RETVAL);
1918
1919 data->errorno = errno;
1920 data->laststype = PL_laststype;
1921 data->laststatval = PL_laststatval;
1922 data->statcache = PL_statcache;
1923}
1924 OUTPUT: 3506 OUTPUT:
1925 RETVAL 3507 RETVAL
1926 3508
1927void 3509void
1928_set_state (char *data_) 3510rouse_wait (...)
3511 PROTOTYPE: ;$
3512 PPCODE:
3513 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3514
3515void
3516on_enter (SV *block)
3517 ALIAS:
3518 on_leave = 1
1929 PROTOTYPE: $ 3519 PROTOTYPE: &
1930 CODE: 3520 CODE:
1931{ 3521{
1932 struct io_state *data = (void *)data_; 3522 struct coro *coro = SvSTATE_current;
3523 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
1933 3524
1934 errno = data->errorno; 3525 block = s_get_cv_croak (block);
1935 PL_laststype = data->laststype;
1936 PL_laststatval = data->laststatval;
1937 PL_statcache = data->statcache;
1938}
1939 3526
3527 if (!*avp)
3528 *avp = newAV ();
3529
3530 av_push (*avp, SvREFCNT_inc (block));
3531
3532 if (!ix)
3533 on_enterleave_call (aTHX_ block);
3534
3535 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3536 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3537 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3538}
3539
3540
3541MODULE = Coro::State PACKAGE = PerlIO::cede
3542
3543BOOT:
3544 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3545
3546
3547MODULE = Coro::State PACKAGE = Coro::Semaphore
3548
3549SV *
3550new (SV *klass, SV *count = 0)
3551 CODE:
3552{
3553 int semcnt = 1;
3554
3555 if (count)
3556 {
3557 SvGETMAGIC (count);
3558
3559 if (SvOK (count))
3560 semcnt = SvIV (count);
3561 }
3562
3563 RETVAL = sv_bless (
3564 coro_waitarray_new (aTHX_ semcnt),
3565 GvSTASH (CvGV (cv))
3566 );
3567}
3568 OUTPUT:
3569 RETVAL
3570
3571# helper for Coro::Channel and others
3572SV *
3573_alloc (int count)
3574 CODE:
3575 RETVAL = coro_waitarray_new (aTHX_ count);
3576 OUTPUT:
3577 RETVAL
3578
3579SV *
3580count (SV *self)
3581 CODE:
3582 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3583 OUTPUT:
3584 RETVAL
3585
3586void
3587up (SV *self, int adjust = 1)
3588 ALIAS:
3589 adjust = 1
3590 CODE:
3591 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3592
3593void
3594down (...)
3595 CODE:
3596 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3597
3598void
3599wait (...)
3600 CODE:
3601 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3602
3603void
3604try (SV *self)
3605 PPCODE:
3606{
3607 AV *av = (AV *)SvRV (self);
3608 SV *count_sv = AvARRAY (av)[0];
3609 IV count = SvIVX (count_sv);
3610
3611 if (count > 0)
3612 {
3613 --count;
3614 SvIVX (count_sv) = count;
3615 XSRETURN_YES;
3616 }
3617 else
3618 XSRETURN_NO;
3619}
3620
3621void
3622waiters (SV *self)
3623 PPCODE:
3624{
3625 AV *av = (AV *)SvRV (self);
3626 int wcount = AvFILLp (av) + 1 - 1;
3627
3628 if (GIMME_V == G_SCALAR)
3629 XPUSHs (sv_2mortal (newSViv (wcount)));
3630 else
3631 {
3632 int i;
3633 EXTEND (SP, wcount);
3634 for (i = 1; i <= wcount; ++i)
3635 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3636 }
3637}
3638
3639MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3640
3641void
3642_may_delete (SV *sem, int count, int extra_refs)
3643 PPCODE:
3644{
3645 AV *av = (AV *)SvRV (sem);
3646
3647 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3648 && AvFILLp (av) == 0 /* no waiters, just count */
3649 && SvIV (AvARRAY (av)[0]) == count)
3650 XSRETURN_YES;
3651
3652 XSRETURN_NO;
3653}
3654
3655MODULE = Coro::State PACKAGE = Coro::Signal
3656
3657SV *
3658new (SV *klass)
3659 CODE:
3660 RETVAL = sv_bless (
3661 coro_waitarray_new (aTHX_ 0),
3662 GvSTASH (CvGV (cv))
3663 );
3664 OUTPUT:
3665 RETVAL
3666
3667void
3668wait (...)
3669 CODE:
3670 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3671
3672void
3673broadcast (SV *self)
3674 CODE:
3675{
3676 AV *av = (AV *)SvRV (self);
3677 coro_signal_wake (aTHX_ av, AvFILLp (av));
3678}
3679
3680void
3681send (SV *self)
3682 CODE:
3683{
3684 AV *av = (AV *)SvRV (self);
3685
3686 if (AvFILLp (av))
3687 coro_signal_wake (aTHX_ av, 1);
3688 else
3689 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3690}
3691
3692IV
3693awaited (SV *self)
3694 CODE:
3695 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3696 OUTPUT:
3697 RETVAL
3698
3699
3700MODULE = Coro::State PACKAGE = Coro::AnyEvent
3701
3702BOOT:
3703 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3704
3705void
3706_schedule (...)
3707 CODE:
3708{
3709 static int incede;
3710
3711 api_cede_notself (aTHX);
3712
3713 ++incede;
3714 while (coro_nready >= incede && api_cede (aTHX))
3715 ;
3716
3717 sv_setsv (sv_activity, &PL_sv_undef);
3718 if (coro_nready >= incede)
3719 {
3720 PUSHMARK (SP);
3721 PUTBACK;
3722 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3723 }
3724
3725 --incede;
3726}
3727
3728
3729MODULE = Coro::State PACKAGE = Coro::AIO
3730
3731void
3732_register (char *target, char *proto, SV *req)
3733 CODE:
3734{
3735 SV *req_cv = s_get_cv_croak (req);
3736 /* newXSproto doesn't return the CV on 5.8 */
3737 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3738 sv_setpv ((SV *)slf_cv, proto);
3739 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3740}
3741
3742MODULE = Coro::State PACKAGE = Coro::Select
3743
3744void
3745patch_pp_sselect ()
3746 CODE:
3747 if (!coro_old_pp_sselect)
3748 {
3749 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3750 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3751 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3752 }
3753
3754void
3755unpatch_pp_sselect ()
3756 CODE:
3757 if (coro_old_pp_sselect)
3758 {
3759 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3760 coro_old_pp_sselect = 0;
3761 }
3762
3763

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